Rheem-Ruud 42-106209-01 Pressure Switch Assembly

The Rheem-Ruud 42-106209-01 Dual Pressure Switch Assembly is a critical OEM safety component engineered for precise monitoring of furnace combustion and venting cycles. This assembly features a dual-stage configuration with specific pressure ratings of -0.30" W.C. and -0.20" W.C., ensuring the inducer motor maintains the necessary vacuum for safe flue gas evacuation. As the direct replacement for 42-102341-02, this factory-calibrated unit eliminates the risks associated with generic sensors that may fail to trip at delicate setpoints.

Designed for high-performance 80% and 90% AFUE gas furnaces, the 42-106209-01 is compatible with a wide range of PRO-tech and Prestige series models, including the R802P and R802V lines. This HVAC pressure switch effectively prevents hazardous gas accumulation by verifying inducer RPM and airflow before allowing the ignition sequence to proceed. For technicians, the perpendicular port orientation and MPL Dual 9375 design allow for a straightforward drop-in installation in tight blower compartments, maintaining the integrity of the system's safety circuit without the need for field adjustments.

• Direct OEM Replacement: Designed specifically to replace the obsolete 42-102341-02 without modifications.
• Dual-Point Sensitivity: Features dual independent switches to monitor both high and low negative pressure thresholds.
• Precise Calibration: Factory-set at -0.30" and -0.20" Water Column to ensure exact safety limit compliance.
• Broad Compatibility: Fits various Rheem, Ruud, and WeatherKing gas furnaces across residential and commercial applications.
• Enhanced Safety: Prevents furnace ignition if restricted venting or inducer failure is detected.

• Why is my furnace flashing a pressure switch lockout code? This usually indicates a restricted vent, failed inducer, or a 42-106209-01 switch that has failed to close.
• Can I use a universal pressure switch instead? No; the dual-pressure assembly uses specific W.C. ratings that are critical for your model's safety logic and shouldn't be bypassed.
• Is this compatible with 80% AFUE models? Yes, this assembly is frequently utilized in Rheem Prestige 80% and 90%+ AFUE gas furnaces.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.